FPGA implementation of MCPFSK modulation for HF data communication

Abstract

Digital modulation based on FSK is widely used in HF data communication. This is due to simplicity in implementation by noncoherent detection and robustness due noise and phase synchronization error. Hardware based design of modem using FPGA can miniaturize the system size. The proposed system integrates both the transmitter and receiver modules into a single FPGA. Further reduction in components is achieved by adopting a multiplierless and parallel algorithm at the receiver module. The throughput in data transmission can be improving using advance modulation technique such as multi frequency modulation technique where the bit-rate rate is greater than the symbol rate.